Elisa Buforn is a professor of geophysics at the Universidad Complutense de Madrid (UCM) where she teaches courses on geophysics, seismology, physics and numerical methods. Professor Buforn's research focuses on source fracture processes, seismicity and seismotectonics and she is Editor in Chief of Física de la Tierra and on the Editorial Board of the Journal of Seismology. Carmen Pro is an associate professor at the University of Extremadura, Spain where she has taught geophysics and astronomy for over twenty years. She has participated in several geophysical research projects and is involved in college management. Agustín Udías is an emeritus professor at the Universidad Complutense de Madrid (UCM) and is the author of a large number of papers about seismicity, seismotectonics and the physics of seismic sources, as well as the textbook Principles of Seismology (Cambridge University Press, 1999). He has held positions as Editor in Chief of Física de la Tierra and the Journal of Seismology and as Vice President of the European Seismological Commission.